<template>
  <view>
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(pic,index) in goodsInfo.pics" :key="pic.pics_id" :data-index="index" @click="preview(index)">
        <image :src="pic.pics_big"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price" v-if="goodsInfo.goods_price">￥{{goodsInfo.goods_price}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goodsInfo.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    <rich-text :nodes="goodsInfo.goods_introduce"></rich-text>
    <view class="goods-nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { mapMutations,mapGetters } from 'vuex'
  export default {
    data() {
      return {
        goodsInfo: {},
        options: [{
          icon: 'shop',
          text: '店铺',
          infoBackgroundColor: '#007aff',
          infoColor: "red"
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },
    onLoad(options) {
      this.getGoodsInfo(options.goods_id)
    },
    computed : {
      ...mapGetters('m_cart',['total'])
    },
    watch : {
      total: {
        immediate : true,
        handler : function(newVal) {
          let findResult = this.options.find(item => item.text == '购物车')
          findResult.info = newVal
        }
      }
    },
    methods: {
      async getGoodsInfo(id) {
        let {
          data
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id: id
        })
        if (data.meta.status !== 200) return uni.$showMsg()
        data.message.goods_introduce = data.message.goods_introduce.replace(/<img/g, '<img style="display:block;"')
        this.goodsInfo = data.message
      },
      preview(index) {
        uni.previewImage({
          current: index,
          urls: this.goodsInfo.pics.map(item => item.pics_big)
        })
      },
      onClick(e) {
        if(e.content.text == '购物车') {
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      ...mapMutations('m_cart',['addCart']),
      buttonClick(e) {
        if(e.content.text == '加入购物车') {
          const {goods_id, goods_name, goods_price, goods_small_logo} = this.goodsInfo
          this.addCart({
            goods_id, 
            goods_name, 
            goods_price, 
            goods_count : 1, 
            goods_small_logo, 
            goods_state : true
          })
        }
      }
    }
  }
</script>

<style lang="scss">
  .goods-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
  swiper {
    height: 750rpx;

    image {
      width: 100%;
      height: 100%;
    }
  }

  // 商品信息区域的样式
  .goods-info-box {  
  padding: 10px;
    padding-right: 0;

    .price {
      color: #c00000;
      font-size: 18px;
      margin: 10px 0;
    }

    .goods-info-body {
      display: flex;
      justify-content: space-between;

      .goods-name {
        font-size: 13px;
        padding-right: 10px;
      }

      // 收藏区域
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
    }

    // 运费
    .yf {
      margin: 10px 0;
      font-size: 12px;
      color: gray;
    }
  }
</style>
